Three-way matching in construction: why the site receipt is the hard part

Three-way matching compares the purchase order, the site receipt (GRN), and the supplier invoice before payment. On a UK construction site the hard part is getting a real, same-day buyer receipt when loads arrive at the gate.

Gather is not an AP matching engine. Gather helps make the receipt findable, dated, and tied to activity for commercial packs.

What three-way matching is

Compare PO, GRN or site receipt, and supplier invoice. Two-way matching skips independent receipt evidence. See goods received note guide and delivery note vs goods received note.

Why construction breaks warehouse assumptions

Multiple gates and workfaces, call-offs and part deliveries, tickets in WhatsApp, and GRNs written from memory at month end hollow out the receipt leg.

Failure modes and GRNI

Missing receipts, reconstructed month-end GRNs, signed tickets treated as full quantity checks, and unmatched invoices in GRNI queues. Site must own the same-day buyer record.

Gather versus AP matching software

Gather is for contemporaneous site evidence and commercial findability with Rosie. Finance ERP and AP tools own tolerance rules and payment runs. Soft CTA: free materials delivery log and Gather site diary.

Download the free materials delivery log